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using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using Amazon.SimpleDB.Model;
using Amazon.Services;

namespace Amazon.SimpleDB
{
    public class Domain : IListSource
    {
        #region Variables
        private Amazon.Services.AmazonAccount _account;
        private Amazon.SimpleDB.AmazonSimpleDB _client;
        #endregion

        #region Properties
        public String Name { get; private set; }

        public DomainRowCollection Rows { get; set; }
        #endregion

        #region IListSource Properties
        bool IListSource.ContainsListCollection
        {
            get { return true; }
        }
        #endregion

        #region Constructors and Finalizers
        private Domain(AmazonSimpleDB client, AmazonAccount account, String name)
        {
            this._client = client;
            this._account = account;
            this.Name = name;
        }
        #endregion

        #region Methods
        private void GetRows()
        {
            if (this.Rows == null)
                this.Rows = new DomainRowCollection();
            this.Rows.Clear();

            if (this.Name.Contains("."))
            {
                this.LegacyGetRows();
                return;
            }
                
            SelectResponse response = new SelectResponse();
            do
            {
                SelectRequest request = new SelectRequest();
                request.NextToken = response.SelectResult.NextToken;
                request.SelectExpression = String.Format("select * from {0} order by itemName()", this.Name);

                response = this._client.Select(request);
                for (int i = 0; i < response.SelectResult.Item.Count; i++)
                    this.Rows.Add(new DomainRow(this, response.SelectResult.Item[i]));
            }
            while (response != null && response.SelectResult.Item.Count > 0);
        }

        private void LegacyGetRows()
        {


        }

        public void Delete()
        {
            DeleteDomainRequest request = new DeleteDomainRequest();
            request.DomainName = this.Name;
            this._client.DeleteDomain(request);
        }
        #endregion

        #region Static Methods
        public static Domain Create(AmazonAccount account, String name)
        {
            if (name.Contains("."))
                throw new FormatException("Cannot contain any \".\" in the domain name.");

            CreateDomainRequest request = new CreateDomainRequest();
            request.DomainName = name;
            AmazonSimpleDB client = new AmazonSimpleDBClient(account.Key, account.SecretKey);
            CreateDomainResponse response = client.CreateDomain(request);
            if (!response.IsSetResponseMetadata())
                throw new NullReferenceException("Unable to create domain");

            return new Domain(client, account, name);
        }

        public static Domain[] GetDomains(AmazonAccount account)
        {
            List<Domain> domains = new List<Domain>();
            AmazonSimpleDB client = new AmazonSimpleDBClient(account.Key, account.SecretKey);
            ListDomainsResponse response = client.ListDomains(new ListDomainsRequest());
            if (response.IsSetListDomainsResult())
            {
                for (int i = 0; i < response.ListDomainsResult.DomainName.Count; i++)
                    domains.Add(new Domain(client, account, response.ListDomainsResult.DomainName[i]));
            }
            return domains.ToArray();
        }
        #endregion

        #region IListSource Methods
        IList IListSource.GetList()
        {
            return this.Rows;
        }
        #endregion
    }
}
